I posted once under my old name, but I'll give it a go under my new name.

The Galaxy Being I think this was the series opener. My favorite part is after Cliff Robertson gets the alien on his equipment, and they begin this talk about life, death, war, and why all beings of the galaxy are forbidden from contact with Earth "because you are too dangerous to other races of the galaxy." That was a fascinating scene! When I was young, I sat fascinated by the aliens of this show, but as an older man capable of understanding the subject matter, this classic show is the best of it's kind, nothing else even comes close.